Electrodeposited Nanophotonics

Abstract

Prior work involving the detection and emission of light from semiconductor nanostructures has involved single crystalline nanomaterials. Here we review the use of electrodeposited, polycrystalline (pc), cadmium selenide (CdSe) in nanowires and nanogap device structures for photonics. The photodetectors and photon emitters we describe are symmetrical metal–semiconductor–metal (M-S-M) devices prepared either by the evaporation of two gold contacts onto linear arrays of pc-CdSe nanowires prepared using lithographically patterned nanowires electrodeposition (LPNE), or by the electrodeposition of pc-CdSe directly onto gold nanogaps. The properties of these devices for detecting light using photoconductivity, and for generating light by electroluminescence, are described.

Profiling Photoinduced Carrier Generation in Semiconductor Microwire Arrays via Photoelectrochemical Metal Deposition

“…This method may be of particular interest for interrogation of materials generated by low temperature, wet-chemical and maskless techniques. [48][49][50][51][52][53] In this work, Si was utilized for demonstration, but since the imaging relies only on the light absorption and charge separation abilities intrinsic to semiconductors, the method should be readily generalizable to a wide class of materials.…”

Directing Nanostructure Formation of Gold through the In Situ Underpotential Deposition of a Secondary Metal for the Detection of Nitrite Ions

“…The applicability of nanostructured materials is diverse and encompasses electrocatalysis, photocatalysis and heterogeneous catalysis as well as surface enhanced Raman spectroscopy, nanophotonics, energy storage, additive manufacturing and electrochemical based sensing for a variety of important biological and inorganic analytes ,,. As an example of the latter, the detection of nitrite has received significant attention .…”

“…The applicability of nanostructured materials is diverse and encompasses electrocatalysis, photocatalysis and heterogeneous catalysis as well as surface enhanced Raman spectroscopy, nanophotonics, energy storage, additive manufacturing and electrochemical based sensing for a variety of important biological and inorganic analytes. [4,[9][10][23][24][25][26][27][28][29][30][31] As an example of the latter, the detection of nitrite has received significant attention. [32][33][34][35] Nitrite is an essential component of a healthy diet as it reacts with hemoglobin and produces methemoglobin which enables transporting of oxygen at the cellular level.…”

Utilising solution dispersed platinum nanoparticles to direct the growth of electrodeposited platinum nanostructures and its influence on the electrocatalytic oxidation of small organic molecules

“…The electrochemical formation of nanostructured materials is a relatively mature field, however, there are consistently new methods and strategies being reported that allow excellent control over composition, size, shape and exposed crystal facets [1][2][3][4][5][6][7]. This is particularly useful given the critical role the aforementioned properties play in electrocatalysis, photocatalysis, surface enhanced Raman spectroscopy and electroanalytical chemistry.…”